AssertionError: expected [Function] to throw 'Error: baseURI option is required' but 'Error: baseURI option is required' was thrown

[niftylettuce]

1) should throw an error if we fail to pass baseURI:
     AssertionError: expected [Function] to throw 'Error: baseURI option is required' but 'Error: baseURI option is required' was thrown

  it('should throw an error if we fail to pass baseURI', () => {
    expect(() => {
      let api = new API();
    }).to.throw(new Error('baseURI option is required'));
  });

and this doesn't work either

  it('should throw an error if we fail to pass baseURI', () => {
    expect(new API).to.throw(new Error('baseURI option is required'));
  });

[niftylettuce]

other relevant snippet:

export default class Api {

  constructor(opts) {

    this.opts = opts || {};

    if (!this.opts.baseURI)
      throw new Error('baseURI option is required');

[niftylettuce]

also tested this:

expect(new API).to.throw('baseURI option is required');

doesn't work either

I'm also using dirty-chai

test/support/index.js: (this gets required in `mocha.opts)

// setup global chai methods
import chai from 'chai';
import dirtyChai from 'dirty-chai';
chai.config.includeStack = true;
chai.config.showDiff = true;
chai.use(dirtyChai);
global.AssertionError = chai.AssertionError;
global.Assertion = chai.Assertion;
global.expect = chai.expect;
global.assert = chai.assert;

[niftylettuce]

See #551

[lucasfcosta]

Since we've got #683 merged, this one has been solved.
You can read more about our decisions on this matter reading this post, and the previous one.
But basically this is related to the behavior when using an Error for the check. When doing this, Chai does a strict (===) comparison to check if both instances are the same.